Muffler



F, P. SAWDERS AND J. G. MURRAY.

MUFFLER.

APPLICAHON FILED DEC. 2, 1919 Patented June s, 1920.

WE. mini) Ocrtwwl-a cause STATES TENT .O F CE rnnux .P. sAwnEns Am) JAMES e. MURRAY, or PITTSBURGH, PENNsYLv NiA.

MUFFLER.

provement in Mufllers, of which improvement the following is a specification. I

Our invention relates in particular to exhaust mufliers for the exhaust of internal combustion motors as employed on automobiles, auto trucks, etc.

' and the bolt mentioned.

Our invention has for its principal objects, sultant products of combustion exhausted from the motor will be thoroughly diffused and silently" exhausted therefrom without occasioning back-fire. Other objects are to provide a muffler that will be durable, simple in construction, not liable to get out of order,

etc. v

With the above objects in view, the invention consists in certain novel features of construction and arran ement of parts as will hereinafter be specifically described and particularly pointed out in the appended claims.

In the accompanying drawings, forming a part of this specification, we have shown one embodiment of our invention, wherein,

Fi ure 1 is an end elevation of said muflier ig. 2 a longitudinal central section through the same.

The device comprises a chambered member, formed of the cylindrical body'portion 1 having integral heads 2 and 3, respectively. The receiving end, or head'Q, has an extended centrally disposed sleeve portion t communicating with the interior by way of the opening 5, said sleeve being divided at 6 and provided with lugs 7 having holes 7 'therethrough for the reception of a suitable clamping bolt. This sleeve portion is adapted to receive the end of the exhaust conduit or pipe and be clamped thereto by Within the chamber is the primary deflector or partition 8 which extends upwardly and rearwardly at an inclination for a distance of about twothirds the diameter, said inclination approximating forty five degrees. The upper portion residing at Pittsburghfln the county of Allegheny and State I of Pennsylvania, 'have'jointly invented a new and useful Imto provide a muffler wherein theredeflector is somewhat contracted at its lower end, the chamber being correspondingly tapered fora short distance at eachside thereof, the end ofwhich terminates in and forms the upper wall. of the: rectangular main discharge opening 9. This main disk charge opening, presents an. area in; cross section, somewhat less than that of the open space of the chamber at the upper end of the p'rimary'deflector as for example, about one-half area. Formed through the lower part of the chamber body is a plurality of auxiliary discharge openings 10, part of which are located, toward and beneath the main discharge opening, the remainder be- 1 ing located toward or beneath the primary deflector. For suspension of the device there is formed on the upper side of the cylindrical portion of the body, a lug 11.

In practice, the. exhaust gases being in motion by the impulse, enter and come into contact with the primary deflectorS by which the same is deflected upwardly toward and come into contact with the upper portion of the secondary deflector. It is then deflected downwardly by this deflector toward and partially passes out of the main discharge opening 9, the remaining portion being still in motion, and in effect then tending to be in something like rotary motion, partially passes out of the group of auxiliary openings 10, below the main opening, and the remainder out of the remaining auxiliary openings 10 beneath the primary deflector. The complete course of the exhaust through the muffler, as set forth, is indicated by the arrows in Fig. 2.

By constructing the muffler to operate on the principle set forth, it will be readily apparent that the exhaust gases or products of combustion, will be diffused in passing -therethrough to the atmosphere, and in so passing to the atmosphere will be broken" up or separated, having the effect of silencing the discharge. Furthermore, the internal arrangement and operation of the exhaust in passing therethrough, is such as to be practically eliminated.

Having thus fully shown and our invention, what we claim, is

1. A muffler comprising a chambered member provided with an intake opening and with a plurality of spaced discharge openings of main and auxiliary order, the auxiliary openings being each of less area than that of the main, and further provided described member having a head at its forward end which is provided with an intake opening and at its rear with a head'disposed at an inclination to form a secondary deflectorand terminating in an elongated main discharge opening, said chamber having a pri- Y mary deflector formed therein at approximately right angles to said secondary de-- flector, said member being further provided with a plurality of auxiliary discharge openings disposed in the lower rearward portion thereof between the main discharge and primary deflector.

4. A mufller comprising a chambered member having a head at its forward end which is provided with an intake opening and at its rear with a head having an inclined portion forming a secondary deflector whichterminates with a transversely disposed main discharge opening formed in said head, said chamber having a primary deflector formed therein at approximately right angles to said secondary deflector, said member being further provided with a plurality of auxiliary discharge openings disposed -'in the lower rearward portion of the chamber and head.

In testimony whereof we have hereunto signed our names in the presence of two subscribing witnesses.

FRANK PQSAWDERS. JAMES G. MURRAY. In the presence of R. S. HARRISON, A. R. FRmL. 

